THE MINERALOGY AND ORIGIN OF COAL BALLS

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SUMMARY

REVIEW OF THE LITERATURE

HISTORY OF CALCAREOUS COAL BALLS:
ARE COAL BALLS CONCRETIONS?
OTHER PLANT PERMINERALIZATIONS:
SULFIDES IN COAL BALLS AND CONCRETIONS:
POTENTIAL SOURCES OF CARBONATE IN THE PALEOPEAT:
ORIGIN OF THE CONFINED AQUIFER FLUIDS IN PALEOPEAT:
STABLE ISOTOPES IN COAL BALL CARBONATES:

RESEARCH METHODS

SAMPLE SOURCES:
METHODS OF ANALYSIS:

DISCUSSION AND CONCLUSIONS

X-RAY DIFFRACTION ANALYSIS OF THE COAL BALLS:
CHEMISTRY OF THE COAL BALLS:
PETROGRAPHY OF THE COAL BALLS:
THE TRAVERTINE-COAL BALL RELATIONSHIP:
LUMINESCENCE PETROGRAPHY OF THE COAL BALLS:
MICRODOLOMITE IN THE COAL BALLS:
EUHEDRAL VERSUS FRAMBOIDAL PYRITE IN THE COAL BALLS:

PROPOSED MODEL OF COAL BALL FORMATION

SELECTED REFERENCES
 

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